Car-brake



(No Model.)

B. W. DWIGHT.

OAR BRAKE. No. 307,849. Patented NovQll, 1884.

Fig.4.

WITNESSES: INVEEIDSR: 5ZAQWW*% wokwv l o p a ORNEY.

EDMUND W. DWIGHT, OF PHILADELPHIA, PENNSYLVANIA.

CAR-BRAKE.

LSFECIFICATION forming part of Letters Patent No. 307,849, dated November 11, 1884.

Application filed September 11, 1884. (No model.)

To all? whom it may concern.-

Be it known that I, EDMUND W. DWIGHT, a citizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and useful ImprovementinCar-Brakes, whichimprovement is fully set forth in the following specification and accompanying drawings, in which Figure 1 represents a side elevation, partly sectional, ofa car-brake embodying my invention. Fig. 2 represents a top or plan View thereof.

Similar letters of reference indicate corresponding parts in the two figures.

My invention consists of a car-brake having its shoes connected in such manner that they are forced against the opposite sides of a car- Wheel and operate effectively.

Referring to the drawings, A A represent brake-shoes on opposite sides of a car-wheel, and B B the hangers thereof.

From the hangers B depend the sliding beams 0, through which are freely passed the rods D, one end of each of which carries a brakeshoe, A, and the other end is pivoted to an arm, E, whose lower end is pivoted to links F, which are also pivoted to the beam 0.

To the upper end of the arm E are pivoted the longitudinally-extending rods or arms G, which extend to the other brake-shoe, A, and are pivoted thereto, it being seen that by means of the mechanism described a pair of brake-shoes A A is connected and work conjointly, the operation being as follows: The beams O are connected with the brake-lever H and receive power therefrom in any suitable manner, whereby sliding motions are imparted to said beams in the direction toward the carwheels, said beams riding freely on the rods D. The links F follow the motions of the 40 beams O, and thus draw the lower ends of the arms E with them. This moves the rods D inwardly, whereby the shoes A are forced against the wheels, and also moves the upper end of the arm E outwardly, whereby the rods or arms G are also drawn outwardly, the effect of which is to draw the shoes A against the whcels,and thus both shoes are powerfully forced against the wheels on opposite sides of K the same, and an effective brake is produced. 'When the lever H is released, the parts are permitted to resume their normal positions and the shoes are relieved, the returnmotion of the beams 0 being assisted by suitably-applied springs a.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is y 1. A beam sliding on a rod with which a brake-shoe is connected, and a pivoted bar connected with said rod and beam and with the opposite brakeshoe, combined and operating substantially as described, forming an improvement in brakes.

2. Brakeshoesincombination withconneoting mechanism consisting of a rod carrying one of the shoes, a sliding beam fitted to said rod, a lever or arm connected with said beam and rod, and a bar pivoted to said arm and connected with the other shoe, substantially as described, whereby the operation of said beam moves the arm,causing both shoes to be forced against the wheels, as stated.

E. W. DWIGHT.

Witnesses:

J OHN A. WIEDERsI-IEIM, A. 1?. GRANT. 

